Signal intensities on DWI and ADC values
a. Signal intensities on DWI and ADC values on initial and subsequent MR scans in 4 patients who underwent one abscess drainage | |||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MR examinations | |||||||||||||||||
Patient # | Initial MR | time | 1. Follow-up | time | 2. Follow-up | time | 3. Follow-up | ||||||||||
ADC | DWI | CRP | ADC | DWI | ADC | DWI | CRP | ADC | DWI | CRP | |||||||
1 | 0.42 | high | 0.5 | D | 4 | 0.87 | low | 0.5 | 14 | 2.19 | low | 0.5 | 26 | 2.25 | low | 0.5 | |
2 | 0.53 | high | 0.5 | 13 | 0.81 | high | 1.7 | D | 21 | 2.76 | low | 0.9 | |||||
0.52 | high | 1.12 | high | 0.46 | high | ||||||||||||
6 | 0.36 | high | 7 | 0.60 | low | 14 | 1.68 | low | |||||||||
0.41 | high | D | 0.51 | low | 1.39 | low | |||||||||||
7 | 0.67 | high | 3.0 | D | 14 | 2.61 | low | 2.2 | 28 | 1.57 | low | 1.0 |
b. Signal intensities on DWI and ADC values on initial and subsequent MR scans in 2 patients who underwent two abscess drainages | |||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Patient # | Initial MR | time | 1. Follow-up | time | 2. Follow-up | time | 3. Follow-up | time | 4. Follow-up | time | ADC | DWI | |||||||||||
ADC | DWI | CRP | ADC | DWI | CRP | ADC | DWI | CRP | ADC | DWI | CRP | ADC | DWI | CRP | |||||||||
2 | 0.52 | high | 2.3 | D | 4 | 2.56 | low | 1.6 | 13 | 1.16 | high | 3.4 | 18 | 0.76 | high | D | 11 | 1.17 | high | 7 | 2.66 | low | |
5 | 0.48 | high | 2.3 | D | 10 | 2.95 | low | 3.18 | 16 | 2.58 | iso | 2.5 | 26 | 0.75 | high | D | 2 | 1.21 | low |
ADC = × 10 −3 mm 2 sec
DWI = signal intensity on DWI
Time = time interval (days) after the drainage
CRP = C reactive protein
D = surgical intervention/drainage